diff --git a/script/systemd/zammad-rails.service b/script/systemd/zammad-rails.service
index a92ad7a51..4e4b1aedd 100644
--- a/script/systemd/zammad-rails.service
+++ b/script/systemd/zammad-rails.service
@@ -7,11 +7,11 @@ Requires=zammad.service
 
 [Service]
 EnvironmentFile=/etc/zammad/zammad.env
-User=${ZAMMAD_USER}
-Group=${ZAMMAD_GROUP}
+User=zammad
+Group=zammad
 Restart=always
 
-WorkingDirectory=${ZAMMAD_WORKING_DIRECTORY}
+WorkingDirectory=/opt/zammad
 
 ExecStart=/bin/bash -l -c "${BUNDLE_BINARY} exec script/rails server -b ${ZAMMAD_BIND_IP} -p ${ZAMMAD_RAILS_PORT}"
 
diff --git a/script/systemd/zammad-scheduler.service b/script/systemd/zammad-scheduler.service
index ec5653727..8b88b1295 100644
--- a/script/systemd/zammad-scheduler.service
+++ b/script/systemd/zammad-scheduler.service
@@ -8,11 +8,11 @@ Requires=zammad.service
 [Service]
 Type=forking
 EnvironmentFile=/etc/zammad/zammad.env
-User=${ZAMMAD_USER}
-Group=${ZAMMAD_GROUP}
+User=zammad
+Group=zammad
 Restart=always
 
-WorkingDirectory=${ZAMMAD_WORKING_DIRECTORY}
+WorkingDirectory=/opt/zammad
 
 ExecStart=/bin/bash -l -c "${BUNDLE_BINARY} exec script/scheduler.rb start"
 
diff --git a/script/systemd/zammad-websocket.service b/script/systemd/zammad-websocket.service
index 8c1450e66..9a56d0124 100644
--- a/script/systemd/zammad-websocket.service
+++ b/script/systemd/zammad-websocket.service
@@ -7,11 +7,11 @@ Requires=zammad.service
 
 [Service]
 EnvironmentFile=/etc/zammad/zammad.env
-User=${ZAMMAD_USER}
-Group=${ZAMMAD_GROUP}
+User=zammad
+Group=zammad
 Restart=always
 
-WorkingDirectory=${ZAMMAD_WORKING_DIRECTORY}
+WorkingDirectory=/opt/zammad
 
 ExecStart=/bin/bash -l -c "${BUNDLE_BINARY} exec script/websocket-server.rb -b ${ZAMMAD_BIND_IP} -p ${ZAMMAD_WEBSOCKET_PORT} start"
 
diff --git a/script/systemd/zammad.env b/script/systemd/zammad.env
index 3b1f84599..7e4e42e20 100644
--- a/script/systemd/zammad.env
+++ b/script/systemd/zammad.env
@@ -1,8 +1,5 @@
 BUNDLE_BINARY=bundle
 RAILS_ENV=production
 ZAMMAD_BIND_IP=127.0.0.1
-ZAMMAD_GROUP=zammad
 ZAMMAD_RAILS_PORT=3000
-ZAMMAD_USER=zammad
 ZAMMAD_WEBSOCKET_PORT=6042
-ZAMMAD_WORKING_DIRECTORY=/opt/zammad
diff --git a/script/systemd/zammad.service b/script/systemd/zammad.service
index 6fb380e1f..d27f3e35f 100644
--- a/script/systemd/zammad.service
+++ b/script/systemd/zammad.service
@@ -9,8 +9,8 @@ Wants=zammad-websocket.service
 
 [Service]
 EnvironmentFile=/etc/zammad/zammad.env
-User=${ZAMMAD_USER}
-Group=${ZAMMAD_GROUP}
+User=zammad
+Group=zammad
 Restart=always
 ExecStart=/bin/sleep infinity